JP4199648B2 - Chopper equipment - Google Patents

Description

The present invention relates to a chopper device for a folding machine in a web-fed rotary printing press.

  A web-fed rotary printing press is provided with a folding machine that cuts a dried and cooled web every predetermined length after printing or folds the web in a width direction or a length direction. Positioned in the final process of the folder is a paper discharge device. The paper discharge device is a device that discharges the signatures arranged at a predetermined interval on a paper discharge conveyor, and usually discharges the signatures fed at a constant interval by providing an impeller.

  FIG. 5 shows a schematic side view of a conventional folding machine, and FIG. 6 shows a schematic diagram of a conveying apparatus.

  As shown in FIG. 5, the folding machine 101 includes a folding cylinder 102, a cutting cylinder 103, and a holding cylinder 104 that rotate in a direction indicated by an arrow in the drawing. These are arranged in the order of the cutting cylinder 103, the folding cylinder 102, and the holding cylinder 104 from the upstream side in the conveying direction.

  A web 105 supplied from a printing unit (not shown) to the folding machine 101 is fed between the folding cylinder 102 and the cutting cylinder 103, and has a predetermined dimension between the folding cylinder 102 and the cutting cylinder 103. To be cut. The cut web 105 is fed around the folding cylinder 102 with its front end held by a needle (not shown) of the folding cylinder 102. Thereafter, the web 105 protruding toward the holding cylinder 104 by the folding blade (not shown) of the folding cylinder 102 between the folding cylinder 102 and the holding cylinder 104 is held by the holding plate ( The gripping cylinder 104 is folded and wound around the gripping cylinder 104.

  The signature 109 formed by being cut and folded in this manner is sandwiched between a pair of upper and lower conveyor belts 106a and 106b and conveyed in the horizontal direction. An impeller 107 is installed near the discharge point of the conveyor belts 106a and 106b. A paper discharge conveyor 108 is installed below the impeller 107. The signature 109 is discharged onto the paper discharge conveyor 108 by the impeller 107 and conveyed to a paper discharge device (not shown). As a result, the web 105 becomes a folded (parallel-folded) signature 109 and is discharged.

  Further, a chopper device 110 having a chopper blade 110a that moves up and down is installed in the middle of conveying the signature 109 by the conveying belts 106a and 106b. Below the chopper device 110, an impeller 111 having the same structure as the impeller 107 is installed. The impeller 111 is installed so as to be orthogonal to the impeller 107 in the axial direction.

  Next, the signature 109 conveyed from the chopper device 110 to the impeller 111 will be described.

  As shown in FIG. 6, the signature 109 is conveyed on the upper surface of the chopper table 112 by the conveyor belts 106a and 106b. A folding roller 113 composed of a large diameter portion 113a and a small diameter portion 113b and a folding roller 114 composed of a large diameter portion 114a and a small diameter portion 114b are supported below the substantially central portion of the chopper table 112. A paper discharge belt 116a is wound around the small diameter portion 113b and the rollers 115a and 115b. Similarly, a paper discharge belt 116b is wound around the small diameter portion 114b and the rollers 115c and 115d. Further, a pressing roller 117 that presses the paper discharge belt 116b in the direction of the paper discharge belt 116a is supported. Further, the impeller 111 is supported below the discharge belts 116a and 116b, and the discharge conveyor 108 is supported below the impeller 111.

  When the chopper device 110 is operated, the signature 109 that is being transported by the transport belts 106a and 106b is fed between the folding rollers 113 and 114 below while being folded at the center by the chopper blade 110a. The signature 109 fed between the folding rollers 113 and 114 is folded from two to four here to become a signature 118. Thereafter, the signature 118 is discharged to the impeller 111 while being sandwiched between the discharge belts 116 a and 116 b, and is discharged onto the discharge conveyor 108 by the impeller 111. Then, the signature 118 is conveyed by the paper discharge conveyor 108 to a paper discharge device (not shown).

  Here, the outer peripheral speed of the large diameter portions 113a and 114a is faster than the outer peripheral speed of the small diameter portions 113b and 114b. That is, the outer peripheral speed of the large diameter portions 113a and 114a is faster than the speed of the paper discharge belts 116a and 116b. The length L in the conveying direction of the signature 118 is set so that the paper discharge belt 116a and the paper discharge belt come into contact with each other by the pressing of the pressing roller 117 from the point A facing the large diameter portion 113a and the large diameter portion 114a. By setting the distance to the contact point B with 116b, the signature 118 is decelerated after increasing the speed. That is, the position of the pressing roller 117 is set so that the distance C from the facing point A to the contact point B is equal to the length L of the signature 118.

  With this configuration, the signature 118 folded by the chopper blade 110a is accelerated by the large diameter portions 113a and 114a, and is decelerated and conveyed by the conveying belts 116a and 116b. Accordingly, interference between the signature 118 that is chopper-folded and the signature 109 that is chopper-folded next can be prevented, and a paper jam between the folding rollers 113 and 114 can be prevented. Further, if the signature 118 transported at a high speed by the large-diameter portions 113a and 114a is discharged to the impeller 111 at the same speed, it is difficult to hold the impeller 111 in a correct posture, and the impeller 111. The signature 118 interferes with the increased speed, and the signature 118 may be scratched. By decelerating this by the conveying belts 116a and 116b, the signature 118 is surely held in the correct posture by the impeller 111 so as not to be damaged.

  For example, Patent Document 1 discloses a transport device that can discharge a signature 118 that is chopper-folded.

JP 2000-95377 A

  However, in the above-described conventional folding machine, folding specifications such as one-fold parallel, two-fold parallel, and delta folding of the signature can be changed. That is, signatures that are processed by the transport device installed in the folding machine 101 are also transported in various lengths L. For such signatures, the set distance C of the pressing roller 117 must be movable at the same time.

  When the setting position of the pressing roller 117 is fixed, when the length L of the signature is longer than the set distance C of the pressing roller 117, the rear end side of the signature is the large diameter portion 113a. If the scratch is caused by the point A facing the large-diameter portion 114a or interferes with the next conveyed signature, paper jam occurs in the folding rolls 113 and 114. In addition, when the length L of the signature is shorter than the set distance C of the pressing roller 117, the leading end of the signature that is not regulated from the folding rolls 113 and 114 extends to the pressing roller 117. The distance is long, and the belt is sandwiched between the transport belts 116a and 116b and is transported while being inclined. As a result, since the impeller 111 is not held in a correct posture, the signature is damaged, and at the same time, the signature discharged from the impeller 111 is poorly aligned on the discharge conveyor 108. The paper is ejected. As a result, the signatures conveyed by the paper discharge conveyor 108 are not properly bound even after being discharged to a paper discharge device (not shown) installed in the next process because the signatures are not aligned properly. Will also be connected.

The present invention has been made to solve such a problem, in the signature of any length, and aims to provide a chopper device to prevent damages and jams of the signature, to improve the conveyance accuracy To do.

A chopper device according to the present invention that solves the above problems is as follows.
In the chopper device that folds the signature by chopper folding by feeding it between the pair of folding rollers while folding the conveyed signature with a chopper blade,
A pair of belts that convey the signature received from the pair of folding rollers at a conveyance speed slower than the conveyance speed of the signature by the pair of folding rollers;
A pressing roller that presses one belt of the pair of belts spaced apart from each other upstream in the signature conveying direction against the other belt and is movably supported in the signature conveying direction;
Driving means for moving the pressing roller in the conveying direction of the signature;
An input unit for inputting the length in the conveyance direction of the signature;
Based on the conveyance direction length of the signature input to the input unit, the length between the opposing position of the pair of folding rollers and the pressing position where the one belt is pressed by the pressing roller is the folding length. Control means for controlling the driving means is provided so as to position the pressing roller at a position that is substantially the same as the length in the conveyance direction of the ditch .

Moreover, the chopper device according to the present invention that solves the above problems is as follows.
The pair of folding rollers includes a conveyance unit that conveys a signature, and a belt support unit that hangs the pair of belts,
The length of the transport unit in the radial direction is longer than the total length of the length of the belt support unit in the radial direction and the thickness of the belt wound around the diameter of the belt support unit .

According to the chopper device according to the present invention, the folded signature received from the pair of folding rollers in the chopper device that folds the signature by chopper folding by feeding it between the pair of folding rollers while folding the conveyed signature with a chopper blade. One pair of a pair of belts that conveys a nip sandwiched at a conveyance speed slower than the conveyance speed of the signature by the pair of folding rollers, and a pair of belts that are separated from each other upstream in the conveyance direction of the signature, A pressing roller that is pressed against the belt and supported so as to be movable in the conveyance direction of the signature, a drive unit that moves the pressing roller in the conveyance direction of the signature, and an input unit that inputs a length in the conveyance direction of the signature; Based on the conveyance direction length of the signature input to the input unit, the length between the opposing position of the pair of folding rollers and the pressing position where one belt is pressed by the pressing roller Is provided with a control means for controlling the driving means so as to position the pressing roller at a position substantially equal to the length of the signature in the conveyance direction. Scratches and paper jams can be prevented, and conveyance accuracy can be improved.

Further, according to the chopper device according to the present invention, the pair of folding rollers includes a conveyance unit that conveys the signature and a belt support unit that wraps the pair of belts, and the length of the conveyance unit in the radial direction is increased. The conveying speed of the signature by the pair of belts is set to be longer than the total length of the length of the belt supporting portion in the radial direction and the thickness of the belt wound around the diameter of the belt supporting portion. It can be made slower than the conveying speed of the ding. Thereby, when discharging | emitting to an impeller, the holding | maintenance part of an impeller can be hold | maintained with a correct attitude | position.

A chopper device according to the present invention will be described in detail based on an embodiment. FIG. 1 is a front view of a chopper device of a folding machine showing an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a block diagram of the configuration of the adjusting means, and FIG. It is a perspective view of the folding roller shown.

  The signature 1 as a sheet-like object is sandwiched between a plurality of pairs of conveyor belts 2 that travel in a pair of upper and lower sides, and is conveyed along the chopper table 3. A chopper blade 4 is installed above the chopper table 3. The chopper blade 4 pushes the substantially central portion of the signature 1 into a slit 3 a that is a gap between the chopper tables 3. Below the slit 3a, two folding rollers 5a and 5b are installed. The folding rollers 5a and 5b rotate in the direction of the arrow shown in FIG.

  Both ends of the folding rollers 5a and 5b are rotatably supported by roller support plates 8a and 8b installed at the front ends of support members 7a and 7b attached to the frames 6a and 6b. A folding roller driving motor 9 connected to the end surfaces of the folding rollers 5a and 5b is installed outside the frame 6a. The folding rollers 5a and 5b are rotatable by the folding roller driving motor 9. The folding rollers 5a and 5b are formed with grooves around which the paper discharge belts 10a and 10b, which are conveying means for conveying the signature 1, are wound. The grooves are referred to as belt supporting portions 5c and 5d (conveying means), and the outer peripheral portions of the folding rollers 5a and 5b are referred to as conveying portions 5e and 5f (feeding means).

  The paper discharge belt 10a wound around the belt support portion 5c of one folding roller 5a is also hung on a pressing roller 11 positioned below the folding roller 5a. The pressing roller 11 is attached to the pressing roller shaft 12 so as to press the discharge belt 10a in the direction of the discharge belt 10b. The pressing roller shaft 12 is attached to the pressing roller shaft mounting plates 13 and 14 on both left and right sides. Screw holes 13a and 14a are formed in the pressing roller shaft mounting plates 13 and 14 in the vertical direction, and support shafts 15 and 16 are formed by screwing the screw holes 13a and 14a. The support shafts 15 and 16 are installed on the frames 6a and 6b via support shaft mounting plates 17a, 17b, 18a, and 18b that are rotatably mounted at their upper and lower positions.

  Rotary encoders 19 and 20 are attached to the upper ends of the support shafts 15 and 16 via the support shaft mounting plates 17a and 18a. Support shaft drive motors 21 and 22 as drive means are connected to lower ends of the support shafts 15 and 16 through the support shaft mounting plates 17b and 18b. The pressing roller 11, the support shafts 15 and 16, the support shaft mounting plates 17a, 17b, 18a and 18b, and the support shaft driving motors 21 and 22 constitute adjustment means.

  Here, a block diagram of a configuration for controlling the support shaft driving motors 21 and 22 is shown in FIG. A control unit 28 serving as control means is connected to a signature size input unit 29, the rotary encoders 19 and 20, and the support shaft driving motors 21 and 22.

  The signature specification is input by the signature size input unit 29 provided on the control panel or the like of the control device 28. Based on the input signal, the support shaft drive motors 21 and 22 rotate forward or backward, and at the same time, the support shafts 15 and 16 rotate forward or backward. That is, since the pressing roller shaft mounting plates 13 and 14 move in the vertical direction, the pressing roller 11 can be moved in the direction in which the signature is conveyed. In these rotations, the rotary encoders 19 and 20 read the position of the pressing roller 11 before adjustment, and the control device 28 receiving the signal reads the position of the pressing roller 11 and the signature size input section 29. It is determined from the signature specification entered in.

  Further, since the support shaft driving motors 21 and 22 are independently installed on the left and right, the position of the pressing roller shaft 12 can be adjusted obliquely with respect to the conveying direction. A two-dot chain line portion in FIG. 2 shows the movement of the pressing roller 11 and the pressing roller shaft 12.

  Below the pressure roller 11, a roller 25a supported by a roller shaft 24a via a roller mounting plate 23a is located. The paper discharge belt 10a is also hung on a roller 25a which is a conveying means to be brought into contact at the discharge location of the signature 1. That is, the paper discharge belt 10a is wound around a roller 25b, which is a conveying means supported by a roller shaft 24b via the belt support portion 5c, the pressing roller 11, the roller 25a, and a roller mounting plate 23b, and rotates. Yes. Similarly, the paper discharge belt 10b is wound around a roller 25c as a conveying means supported by a roller shaft 24c via the belt support portion 5d, a roller 25d, a roller 25e as a conveying means, and a roller mounting plate 23c. is doing. The rotation directions of the paper discharge belt 10a and the folding roller 5a and the paper discharge belt 10b and the folding roller 5b are the same. The rotation direction of the paper discharge belts 10a and 10b is the direction shown in FIG.

  An impeller 26 is installed below the roller 25a, and a discharge conveyor 27 is installed below the impeller 26. The rotation direction of the impeller 26 is the direction indicated by the arrow in FIG.

  With the above-described configuration, the signature 1 pushed between the folding rollers 5a and 5b is discharged below the folding rollers 5a and 5b. At this time, in response to the length of the signature 1 in the conveying direction, the position of the pressing roller 11 is adjusted to the signature specification input to the signature size input unit 29. Let X be the point of the folding rollers 5a, 5b facing the conveying sections 5e, 5f. Let Y be the contact point of the paper discharge belts 10a and 10b when the pressure roller 11 presses the paper discharge belt 10a in the direction of the paper discharge belt 10b. Let Z be the distance from the opposite point X to the contact point Y. That is, the pressing roller 11 is adjusted so that the distance Z is equal to the length of the signature 1 in the conveying direction. The paper discharge belts 10a and 10b come into contact for the first time at the position Y where the pressing roller 11 is adjusted.

  The position of the pressing roller 11 is adjusted by inputting the length Z in the conveying direction of the signature 1 to the signature size input unit 29 provided on the control panel of the control device 28, based on the input signal. This is done by rotating the support shaft drive motors 21 and 22. The position of the pressing roller 11, that is, the position of the pressing roller shaft mounting plates 13 and 14 is transmitted to the supporting shafts 15 and 16 by the rotation of the supporting shaft driving motors 21 and 22, and the supporting shafts 15 and 16. The rotary encoders 19 and 20 read the number of rotations, and the position is known based on this signal. If the signature 1 is bent and ejected between the folding rollers 5a and 5b, the supporting shaft driving motors 21 and 22 are installed separately on the left and right, so that the pressing roller shaft 12 is It is possible to correct the signature posture by adjusting it diagonally. Thereby, the position adjusting operation of the pressing roller 11 can be easily performed, and the conveyance accuracy of the signature 1 can be improved.

  Further, the speed on the outer periphery of the belt support portions 5c and 5d is slower than the speed on the outer periphery of the belt support portions 5c and 5d and the speed on the outer periphery of the transport portions 5e and 5f. That is, the speeds of the paper discharge belts 10a and 10b are slower than the speeds on the transport units 5e and 5f. This is because the paper discharge belts 10a and 10b are wound around the outer circumferences of the belt support portions 5c and 5d, which are portions having a smaller diameter than the transport portions 5e and 5f. That is, if the length in the radial direction of the conveying portions 5e and 5f is r1, and the total length of the radial lengths of the belt support portions 5c and 5d and the thickness of the paper discharge belts 10a and 10b is r2, then r1 is It is set larger than r2.

  From the above, the signature 1 discharged from between the folding rollers 5a and 5b is first discharged at the speed of the conveying portions 5e and 5f of the folding rollers 5a and 5b. At the same time as the bottom of the signature 1 moves away from the conveying portions 5e and 5f (X position), the leading end of the signature 1 is sandwiched between the paper discharge belts 10a and 10b (Y position). Then, the conveyance is continued at the speed of the paper discharge belts 10a and 10b. That is, the signature 1 comes into contact with the paper discharge belts 10a and 10b for the first time at the Y position, and is discharged at a reduced speed.

  Thereafter, the reduced signature 1 is discharged from between the rollers 25a and 25e. The signatures 1 that are intermittently sent one by one are dropped into the holding part 26a between the blades of the impeller 26 and rotated one by one. Thereafter, the signature 1 is discharged onto the paper discharge conveyor 27 and conveyed to a predetermined position. Therefore, since the speed is reduced and discharged to the impeller 26 with high accuracy, the signature 1 is not scratched in the impeller 26 and the discharge to the discharge conveyor 27 is not disturbed.

  With this configuration, the signature 1 that has been chopper-folded by the chopper blade 4 is accelerated by the conveying portions 5e and 5f, decelerated by the conveying belts 10a and 10b, and conveyed. Further, it is possible to prevent interference between the signature 1 that is chopper-folded and the signature 1 that is chopper-folded next, and the signature at the opposite point X between the transport portion 5e and the transport portion 5f. 1 paper jam is prevented. Further, when the signature 1 conveyed at an increased speed by the transport sections 5e and 5f is discharged to the impeller 26 at the same speed, it is difficult to be held in the correct posture by the impeller holding section 26a. 26, the signature 1 interferes at an increased speed, and the signature 1 may be scratched. By decelerating this by the conveyor belts 10a and 10b, the signature 1 is reliably held in the correct posture by the holding portion 26a of the impeller so that no scratches are made.

In the present embodiment, the folding rollers 5a and 5b are provided with the belt support portions 5c and 5d as conveying means and the conveying portions 5e and 5f as feeding means. It may be provided. For example, a roller having only the conveying portions 5e and 5f is provided between the chopper table 3 and the folding rollers 5a and 5b, and the folding rollers 5a and 5b are rollers having only the belt support portions 5c and 5d. It is a thing. Further, the present invention is not limited to the chopper device of the folding machine according to the above-described embodiment, and can be applied to all sheet-like material conveying devices conveyed by a belt. For example, the present invention may be applied to a sheeter (not shown) that is a device that collects and stacks sheets formed by cutting a web.

Accordingly, the folding rollers 5e and 5f for feeding the signature 1 and the transport belts 10a and 10b for transporting the signature 1 sent by the transport units 5e and 5f at a lower speed than the transport units 5e and 5f. If, a the impeller 26 to rotate convey the signatures 1 discharged from the conveyor belt 10a, 10b and held in the holding portion 26a between the blades, the transport belt 10a of the conveyor belt 10a The pressing roller 11 is pressed in the direction, and the pressing roller 11 is supported so as to be movable in the conveying direction of the signature 1 to be conveyed. It is possible to prevent scratches and paper jams and improve the conveyance accuracy .

  The folding rollers 5a and 5b are provided with the belt support portions 5c and 5d that wrap around the conveying belts 10a and 10b and convey the signature 1, respectively, and the pressing roller 11 includes the conveying portions 5e and 5b. In order to adjust the signature 1 in which the distance between the opposing position of 5f and the pressing position at which the conveying belts 10a and 10b are pressed by the pressing roller 11 is approximately the same as the length in the conveying direction. Since the support shaft driving motors 21 and 22 are provided, the pressure roller 11 is discharged from the conveying portions 5e and 5f, and at the same time, the conveying belts 10a and 10b are in contact with the signature 1. Therefore, it is possible to reliably cope with the signature 1 having a length in any conveyance direction, and therefore it is possible to improve the conveyance accuracy.

  Still further, the radial length r1 of the conveying portions 5e and 5f is equal to the radial length of the belt supporting portions 5c and 5d and the conveying belts 10a and 10b wound around the diameters of the belt supporting portions 5c and 5d. The signature 1 that has been chopper-folded by the chopper blade 4 is accelerated by the conveying portions 5e and 5f and decelerated by the conveying belts 10a and 10b. Are transported. That is, it is possible to prevent interference between the signature 1 to be chopper-folded and the signature 1 to be chopper-folded next, and the signature at the opposite point X between the transport portion 5e and the transport portion 5f. 1 paper jam is prevented. In addition, the signature 1 that is conveyed at an increased speed by the conveying units 5e and 5f is not discharged to the impeller 26 at the same speed but is decelerated by the conveying belts 10a and 10b. 1 can be reliably held in the correct posture by the holding portion 26a of the impeller, so that there is no scratch. Therefore, scratches and paper jams of the signature 1 can be prevented, and the conveyance accuracy can be improved.

  Furthermore, the pressing roller 11 includes the signature size input unit 29 for inputting the length of the signature 1 in the conveying direction, and the signature 1 in which the pressing roller 11 is conveyed by the conveying belts 10a and 10b. The support shaft drive motors 21 and 22 that move in the conveying direction of the support shaft and the support shaft drive motors 21 and 22 so that the pressing roller 11 moves based on the data set in the signature size input 29 section. By providing the control device 28 for controlling, the pressing roller 11 can be easily set to the length in the conveying direction of the signature 1, so that the adjustment work can be reduced. In addition, since the support shaft driving motors 21 and 22 are independently installed on the left and right, the position of the pressing roller shaft 12 can be adjusted obliquely with respect to the transport direction, so that the transport is bent from the transport portions 5e and 5f. Even in such a case, the conveyance accuracy can be improved.

  The present invention is effective when used for a paper discharge device of a web-fed rotary printing press.

It is a front view of a chopper device showing one example of the present invention. It is a side view of FIG. It is a block diagram which shows the structure of the adjustment means of one Example of this invention. It is a perspective view of the folding roller which shows one Example of this invention. It is the whole folding machine which shows a prior art example. It is a schematic side view of the conveying apparatus which shows a prior art example.

Explanation of symbols

1 signature 2 transport belt 3 chopper table 3a slit 4 chopper blades 5a, b folding rollers 5c, d belt support 5e, f transport 6a, b frame 7a, b support member 8a, b roller support plate 9 for driving a folding roll Motor 10a, b Paper discharge belt 11 Press roller 12 Press roller shaft 13 Press roller shaft mounting plate 13a Screw hole 14 Press roller shaft mounting plate 14a Screw hole 15 Support shaft 16 Support shaft 17a, b Support shaft mounting plate 18a, b Support shaft Mounting plate 19 Rotary encoder 20 Rotary encoder 21 Support shaft drive motor 22 Support shaft drive motors 23a-c Roller mounting plates 24a-c Roller shafts 25a-e Rollers 26 Impeller 26a Holding unit 27 Discharge conveyor 28 Control device 29 Folding Ding size input section

Claims (2)

In the chopper device that folds the signature by chopper folding by feeding it between the pair of folding rollers while folding the conveyed signature with a chopper blade,
A pair of belts that convey the signature received from the pair of folding rollers at a conveyance speed slower than the conveyance speed of the signature by the pair of folding rollers;
A pressure roller that presses one belt of the pair of belts separated from each other upstream in the signature conveying direction against the other belt, and is movably supported in the signature conveying direction;
Driving means for moving the pressing roller in the conveying direction of the signature;
An input unit for inputting the length in the conveyance direction of the signature;
Based on the conveyance direction length of the signature input to the input unit, the length between the opposing position of the pair of folding rollers and the pressing position where the one belt is pressed by the pressing roller is a folding length. Control means for controlling the driving means so as to position the pressing roller at a position that is substantially the same as the length in the conveying direction of the ditch
A chopper device characterized by that. The chopper device according to claim 1,
The pair of folding rollers includes a conveyance unit that conveys a signature, and a belt support unit that hangs the pair of belts,
The length in the radial direction of the transport unit is longer than the total length of the length in the radial direction of the belt support unit and the thickness of the belt wound around the diameter of the belt support unit.
A chopper device characterized by that.

Images